Milking app abattis



E. E. G0013. j MILKING APPARATUS.

l-PPLIATII FILED JUNE 27, 190B.

Patented Oct. 26, 1909.

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E. E. G00D. MILKING APPARATUS. APPLIOATIQN FILED JUNE 2.7, 1908.

Patented oct. 26, 1909.I

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EZRA. E. GOOD, F WATERLOO, IOWA.

Specification o f Letters .Patent.

MILKrNG APPARATUS.

Patented Oct. 26, 1909.

Application filed June 27, 1908. Serial No. l$540,608.

To all whom 'it 'may concern:

Be it known that I, ,EZRA E. Groen, a citi. z en of the United States, residing `at Water- 100,-' 1n the county of Blackhawk and State of Iowa, have' invented certain new and useful Improvements in Milking Apparatus;

and I do hereby declare the following to be a full, clearrand exact description of the the pulsatin devices for thevpurp'ose of. re-

-lieving the rawing tension on the teatcups.

' Fig; -3 is a To the aboveends the invention .consists of the novel devices and combinationsof the claims.' l

'devic hereinafter described yand 4define dn In the accompanying drawings illuls.-y trate the invention, like characters indicatetype, thatls normally gravity hel like .parts throughout the several views.

Referring tothe drawings, Figure 1"" is a perspective View showingmy presentinvention lapplied to a milking apparatusem loying av pulsating device of the character1` isclosed and claimed in my prior patent No. 875,706, issued of date January 7,1908.-`

Fig. 2 is a detail view in s1de.elevation,.with

some partsbroken away, showing the'milk' can-and the improved connections -"for-'g pre"v .venting -jair` from entering the milk 2; 'an'v4 14 is adetailitaken o line :ef'm of-Eig.' 3, Showing the parts@ larger .scalethan the latter/view d Some partsbeingleftin full. f

The numer l1 indi tesl the numeral 2- s`tallposts rigidly securedj inf'the usualor any suitablejway. The character 'e indicates'-cows'within the stalls andwhich -underzsuction-, fto permitair tn .be drawn@ are being milked "by the apparatus.

The numeral 3 indicates an air i leads to the air pump, (not shown y means vacuum is produced in apparatus.

ing dependingbranches 5,-/ofx which branches there is one foreach stall. Asshown, valves 6 are provided in the upper portions of the Aappe'rtains to make lan .view 'of the artsv shown 1n 1106i? tai the 5 and by means v of which the said pipes may be independently opened and closed,

The-numeral ,-7 indicates a vacuumgage which is in communication with the pipe 4.

Pipes The numeral 8 indicates, as an entirety, apnlsating device of the character disclosed and claimed vin my prior patent above identiied, and which pulsating device, as shown,

is connected to the pipe 4.

The numeral 9 indicates alnilk can that is provided with a removable cover 10 of the usualA 'or any suitable construction which' will' make the can approximately air tight, .when applied.

.Each can 9 is provided with a milk inlet pipe 11 and with an air outlet or suction pipe 12, which latter is connected, as shown, by a flexible tube 13, to one'of the branch pipes 5. A vertically disposed'tubular valve seat 14, preferably in the form' of a casting, interposed in or connected bef -tween the sections of the milk pipe 11. "Working vertically. within' the valve Aseat -castinglfis aout-oil' valve 11 5 of the plunger in its lowermost position, shown in Fig L1-,by a

:weight 16 ;'the downward movement vof saidz vvalve being, 'forated cap 17 screwed lto the lower end of as shown, limited bya f pers aidcasti g 11i. At its intermediate portion his. cutfoli valve .l5 is provided with ananunularj-lportl that is normally below dia- 1netrically l opposite ports'19 land 2Q formed '1nthe'fcastin 14 at' the extremities'of the nne'cte'djmf pipe sections l1. When-the lye 15 is moved upwarditxstrikes atl 2l,f ormed in the upper por-1l nd its port.- l8i' will from thegc'an 9,'bnt which losesV automatically toipreventfair from -entering ,the sa1d can throiiglij'thef pipe 12.

\ stitute complete milkconduits or tubes leadingv into thecan, through the'valve casting lll and its ports 19 and` 20. l

The axial valve vseat in the casting 1li, at 5 its upper portion, is connected to the outer section or' the milk pipe 11, through an air conduit 27 that .is normally closed by a gravity seated check valve 28, preferably seated withinthe said casting 14. The nuo meral S29 indicates a plug seated. in the upper portion of the casting 14 and which, When removed, atl'crds access to the ,check valve :28. The numeral 3() indicates a regulating valve Which, as shown, is screwed 15 into the upper portion of ythe casting 14,and b v means of which the conduit 28 maybe contracted or opened up so as to vary the suction on-the teat cups. The conduit 27, it will be noted, constitutes part of the complete by-passage that connects theouter section of the milk pipe 11 with a portion of the air pipe 12 just above the check valve 23.'

Operation: The operation ot the device above described is substantially as follows:

' lVhen suction is produced in the pipes 3, 4 and 5v, the check valve 28 is held closed,

while the check valve ,23 Will freely open, thereby j causing Athe suction or pressure vacuum produced to be effective in the can Sand through tliebya'ssage 22 on the iupper end of the cut-o valve 15, andwhen this partial vacuum or suction is suilicient' to overcome the Weight 26, said cut-oliI valve .15 willbe raised so that its 'port 18 will fregister with the ports 19 and 20, thereby opening up communication With the can and the` milk tubes 2li-'725 and teat cups 26. This, as

s is evident, Will cause the milk to `loe'dravvn through thev milk tube or conduit into the 40 can. This ydrawingaction of the milk into the can Will continue until air is admitted lirio the pipes -lan 5 by act-i011 0f the pull-A .satin'g device 8; and when this takesy place,

the "relief from back pressure or suction Caused by the admission of air into Asani pipes 4 and 5 Will permit the cut-od valve 1 5 to be dropped back into its normal position, shown in Fig. 4:, thereby closing or cutting olf communication between the-can and the outer portion of the milk tube or conduit. At the same time theA check vvalve 23 fwill be closed by an excessive pressure in the Y' pipes L1 and 5 over that in the can 9,.and the admitted air Will then open the check valve 55128 and permit air to flow through the complete lay-passage 22-27 Yinto the outer por- -tion of the milk conduit or tube, lso as to y thereby relieve' the teat cups from suctionor vacuuinrdrawing action. It 'will thus be seenthat While the pulsationsproduced. by the actions of the air pump and pulsating device -arerendered effective upon the tea'jt cups so as to produce lthe desired milking action, and While under each intermittent drawing actionplromthe-pump While the air' or the system in order to produce the desired v pipes arefclosed by the pulsatingv device, air

Will be drawn from the can, nevertheless .air is positively prevented from rentering `or coming back into the can when the pulsating device permits air to enter the air pipes and outer ortion of the milk conduit. To illustrate, inthe apparatus disclosed in my said prior patent, each time air is admitted into thef'system by opening of the valve of the pulsating device, enough air will be admitted into the cans to reduce the vacuum therein an amount approximately equal to that produced in the teat cups; and, under 'each drawingl action ont' the pump, all air admitted into the-cans by a previous opening of the valve of the pulsating device,

must he again drawn out before the desired vacuum or suction lcan be produced inthe teatcups and' milk tube'. lin thel present apparatus, any vacuum once4 produced iii the 85 milk cans is maintained so that the pump has only to draw suicient air trom the pipes required to produce the'suction or vacuum in the milk pipe or teat cups. My present invention, therefore, very greatly increases the etliciency or the apparatus by reducing the amount oit air that is admitted to the system to give the relief from suction or vacuum, and which must be again drawn out suction or vacuum for the milking action.

By 'adjustments pf the regulating valve 30 theconducting capacity oi" theby-passage may be varied so as in Vvary the extent of the action of the pulsations on the teat cups. 1Go For instance, when said regulating valve is Wide open, thel greatest variationy in pressure produced by the pulsations will be rendered effective on the teat cups, and when the said valve is adjusted so as to contract the ley-passage at'the ypoint controlled thereby, the intensity of these pulsations 'at the teat cups `Will be `very greatly increased.

lnjthe drawings of this application' is illustratedwhat I believeto be' the preferred 110 arrangement of 'the irhproyed device for preventing air from entering the milk can, butm l do not limit .myself'to this specific construction showin, buton 4thecontrary, he-

lieve this Vinvention to be generic in its na- W A ture and desire to claim the saine accordingly. The eli'cieney of the improved device has been demonstrated in actual practice. What claim is:

' 1 In a milking rapparatusythe 'combina- 120 i tion with a can, a milk conduit leading into said can, and an air conduitvleading from said can, of an air by-passage provided With a check valve, and connecting said air conduit to sud milk conduit independently of 12/5 Athe can, and valvemechanisms arranged to permit airto be drawn vtroni lsaid can,` and milk to be drawn into said can, but vpreventing a itlovv*4 ot air into said can.

2. ln a milking apparatus of the charac- @30 a milk, conduit leading ter described, the combination with a can, into said can, and an air conduit leading from said can, of an air by-passage connecting said air 'conduit to said milk conduit` independently of the can and provided with a cheek valve, a check Y. valve in said air conduit between said an andsaid by-pas'sage, anda cut-0E valve noimally closing said milk conduit between said can and said by-passage and arranged to be opened by suction or partial Vacuum pro- .duced in. said by-passage.

3. In a milking apparatus oi. the character described, the combination with a can, a milk conduit leading into said can, and an air c'onduit leading from said can, of' an air by-passage connecting lsaid air conduit to said milk conduit independently of the can valve in said air conduit between said can and said by-passage, a cut-off valve nori mally closing said milk conduit between said can and siaid by-passage and arranged to'v be opened by Suction or partial vacuum pro-` duced in said b passage,l and a regulating Valve in Said ley-passage.

vet. The combination with a milk can provided with an air outlet conduitand a milk inlet conduit, of a valved by-passage convpassage, and a cut-oil' valve normally closin portion of a cheek valve, a checkneeting said air conduit with said milk conduit independently of said can, a valve in said air pipe between said can and said bysaid milk conduit betwgnsaid can and sai by-passage and 'arrangedv to be opened by suction or partial Vacuum producedjn said by-passage.

5,. The combination with amilk `can provided with an air outlet-conduit and a milk inlet conduit, of a Valved' lay-passage connecting said air conduit to said milk conduit independently of the can, a check valve in said air'conduit between said can and Said bjr-passage, a valve` seat casting connected in said milk conduit and through which a said by-passage is extended, and a gravity seated cut-0H'l valve of the plunger type seated in said casting, normally closing said milk conduit between said can and said by-passage, being subject to vacuum or suction from said by-passage.

ln testlmony whereof I aiiix my signature in presence of two witnesses.

EZRA E. GOOD. Witnesses:

W. J MoGoRREY, F. E.`STEWAR'r.

the vupper portion of said valve 

